package dbhandler;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Retention(RetentionPolicy.RUNTIME)//运行时一直保留
@Target(ElementType.FIELD)//可以定义在字段上
public @interface Column {
    String value();
}
